Doing what you already understand is a way to get ahead in the Forex market. If you start trading, and have no idea what you are doing, you will end up losing more money then you wish to. Trading just because someone told you it was a good move will not help you gain more knowledge, and if you are unfamiliar with what you are trading, you will not really know if it is a good idea or not.
Study your prior trades, both the good and the bad. The best way to learn what works is to study your successes and failures in the market. Look for patterns in your trades to see what strategies work best for you. Try keeping a diary of your trades and mark down what the results are.
When looking for a reputable Forex brokerage firm, one of the easiest and quickest things you can do is to check their reputation. Look for firms that have verifiable offices that have been in operation longer than just overnight. Also, look into online reviews of the firm.